Latest roundup of common fertilization mistakes in greenhouse celery

Celery is one of the common vegetables in our daily lives, and with the spread of greenhouse technology, much celery is now grown in greenhouses, and fertilizing greenhouse-grown celery is an important task, but due to traditional fertilization habits, greenhouse celery has some mistakes in fertilization. So what are the fertilization mistakes in greenhouse celery? Let's find out together.

1. Applying undecomposed organic fertilizer

Organic fertilizer has a small carbon-to-nitrogen ratio and decomposes quickly; during decomposition, localized high temperatures and high concentrations of chlorine and organic acids are produced, which very easily cause root burn in vegetable roots. Farmyard manure that has not been decomposed also contains pathogenic bacteria and insect eggs; if it is applied directly without any treatment, it very easily spreads diseases and pests. In addition, if farmyard manure is applied and then left to decompose, it will also produce ammonia gas and burn the seedlings.

2. Excessive fertilization

Greenhouse celery is often over-fertilized; especially when chemical fertilizer is applied all at once in too large an amount, fertilizer burn very easily occurs, causing the crop roots to have difficulty absorbing water, leading to stunted seedlings with stiff growth and deformed leaves, and in severe cases causing the crop to gradually wither and die.

3. One-sided application of chemical fertilizer

When a certain nutrient is applied in excess, it causes celery to resist other elements, leading to deficiency symptoms. For example, one-sided application of nitrogen fertilizer causes phosphorus, potassium and medium and trace elements in the soil to show a declining trend as the greenhouse age increases, causing an imbalance in soil nutrient ratios and thus inducing various diseases. When celery lacks calcium, it causes tipburn; when salinity is too high, it also inhibits root uptake and utilization of calcium, causing physiological calcium deficiency. One-sided application of potassium fertilizer reduces the effectiveness of calcium, magnesium and boron fertilizers; one-sided application of phosphorus fertilizer reduces the effectiveness of calcium, zinc and boron fertilizers.

4. Long-term application of chlorine-containing fertilizers

Chlorine can reduce the starch content in vegetables, causing vegetable quality to decline and yields to drop, and when it remains in the soil it causes soil acidification, resulting in soil calcium deficiency and soil compaction. None of these are conducive to the growth and development of celery, so chlorine-containing chemical fertilizers should not be applied over the long term.

The above is an introduction to common fertilization mistakes in greenhouse celery. We hope it helps you. To learn more related knowledge, please stay tuned to us.